505575037447 has 2 divisors, whose sum is σ = 505575037448. Its totient is φ = 505575037446.

The previous prime is 505575037439. The next prime is 505575037453. The reversal of 505575037447 is 744730575505.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 505575037447 - 2³ = 505575037439 is a prime.

It is a super-2 number, since 2×505575037447² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 505575037394 and 505575037403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505575037417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252787518723 + 252787518724.

It is an arithmetic number, because the mean of its divisors is an integer number (252787518724).

Almost surely, 2^505575037447 is an apocalyptic number.

505575037447 is a deficient number, since it is larger than the sum of its proper divisors (1).

505575037447 is an equidigital number, since it uses as much as digits as its factorization.

505575037447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10290000, while the sum is 52.

The spelling of 505575037447 in words is "five hundred five billion, five hundred seventy-five million, thirty-seven thousand, four hundred forty-seven".